I’m a natural blonde and can’t say I can notice a difference. Will finish the bottle but unlikely to repurchase. 

This is by far the best I have used it brightens without stripping the hair of moisture like some do.

I absolutely LOVE Olaplex products. I couldn’t wait to try this toning shampoo when it came back into stock. I purchased a bottle for myself and my Mum. Sadly neither of us liked this shampoo and it failed to lather. Disappointed and a waste of money. 

Love this and it works but I wouldn’t recommend you leave it on too long if you have very blonde or dry ends as it soaks up the colour like a sponge, my hair went purple almost grey looking on my high lights and it took a few washes with normal shampoo to remove the colour

Does what it says on the tin. Decent size & didn’t stain my hands. Didn’t expect less from this brand and wasn’t disappointed